But it is lamentable to observe, that let research discover, let science teach, let art practice what it may, man, in all his mutations, never fails to get back to some point at which he has been before. The human mind seems to perform, by some invariable laws, a sort of cycle, like those of the heavenly bodies. We may be unable, (and, for ourselves, we profess to be so) to trace the _causes_ of these changes; but we are not sure that an accurate observation of the history of various nations at different times, may not detect the _laws_ that govern them. However eccentric the orbit, the comet's place in the heavens enables the enlightened astronomer to anticipate its future course, to tell when it will pass its perihelion, in what direction it will shoot away into the unfathomable abyss of infinite space, and at what period it will return. But what especially concerns us, is to mark its progress through our planetary system, to determine whether in coming or returning it may infringe upon us, and prove the messenger of that dispensation which, in the end of all things, is to wrap our earth in flames. Not less eccentric, and far more deeply interesting to us, is the orbit of the human mind. If, as some have supposed, the comet in its upward flight is drawn away by the attraction of some other sun, around which also it bends its course, thus linking another system with our own, the analogy will be more perfect. For while man is ever seen rushing with uncontrollable violence toward one or the other of his opposite extremes, fanaticism and irreligion--at each of these we find placed an attractive force identical in its nature and in many of its effects. At each extreme, we find him influenced by the same prevailing interest--devoting himself to the accomplishment of the same great object. Happiness is his purpose. The sources of that, he may be told, are within himself--but his eye will fix on the external means, and these he will labor to obtain. Foremost among these, and the equivalent which is to purchase all the rest, is property. At this all men aim, and their eagerness seems always proportioned to the excitement, which, from whatever cause, may for the time prevail. Under such excitement, the many who want, band themselves together against the few that possess; and the lawless appetite of the multitude for the property of others calls itself the spirit of liberty.